Jason Aldean‘s pregnant wife mourned the 59 victims and more than 500 injured during the recent mass shooting in Las Vegas, when a gunman opened fire during Aldean’s performance at the Route 91 Harvest Country Music Festival.

“Took me a while to be able to write these words,” wrote the singer, who was there during the shooting while her husband performed on stage. “Thank you to everyone who has reached out to Jason and I… Means the world to us.”

In her emotional post, the American Idol alum, 29, says she’s been “in a daze” since the mass shooting.

“It’s been hard to process what happened the other night… still feel like I’m in a daze,” she wrote. “First and foremost, THANK YOU to the first responders. It amazed me all the time and still continues to — these people completely put everyone else’s lives before theirs and we are forever grateful.”

“When the gunfire started, I was not with Jason, but with some friends in a tent close to Mandalay,” she continued. “As you can imagine my first instinct was to run to him and his was the same. As we laid behind equipment onstage with some of our road family, bullets flying past… all I could think was ‘I never even got to hold my baby.’”

“We all made sure the others knew we loved them and then ran for cover where we stayed for the next couple hours. (Not knowing if there were multiple shooters, where the bullets were coming from… NOTHING),” she wrote. “We were the lucky ones. I can’t put into words the pain and heartache we feel for the ones who are no longer with us.”

She concluded: “May God be with their families and friends during this horrendous time. Each and every one of you are and will forever be in our prayers.”